You may certainly word this otherwise, but basically:

"La falsedad documental de carácter ideológico se considera por regla general atípica cuando se comete por un particular..."

=

"making false statements in an otherwise authentic document on the part of an individual is not generally deemed a criminal offense"

Definitions:

"falsedad ideológica/intelectual" (plasmar manifestaciones inveraces en un documento de otro modo auténtico) = making false statements in an otherwise authentic document

(this contrasts with “falsedad material” (creación de un documento falso o alteración de uno ya existente) = forgery/false making of a document or altering/tampering with an already existing one

atípico = noncriminal; not provided for under criminal law

Hope this helps!


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Note added at 23 mins (2017-03-09 11:05:35 GMT)
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Note: in the context of criminal law "atípico" has a specific meaning unrelated to its nonlegal meanings (exceptional, not usual).

It is the opposite of the term "típico" which in criminal law means "legally-defined as a criminal offense" and derives from the concept "tipicidad", one of the elements of crime in the Spanish teory of crime ("teoría del delito")
https://rebeccajowers.com/2016/05/14/espanol-juridico-2/